MedGemma 1.5 4B
The Medical AI That Reads CT & MRI
Powered by Dr7.ai Medical AI Platform
Experience breakthrough multimodal medical AI with native 3D imaging analysis. MedGemma 1.5 4B processes CT and MRI volumes directly, tracks disease progression over time, and runs locally on consumer hardware for complete data privacy.
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Experience native 3D medical imaging analysis with local deployment capability
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What is MedGemma 1.5 4B?
MedGemma 1.5 4B is a breakthrough multimodal medical AI model from Google DeepMind that fundamentally transforms how AI understands medical imaging. Unlike previous models limited to 2D analysis, MedGemma 1.5 natively processes 3D volumes from CT and MRI scans, enabling deep interpretation of complex anatomical structures.
The model introduces revolutionary longitudinal analysis capabilities - acting as a 'medical time machine' that tracks disease progression across multiple scans taken over time. This enables early detection of subtle changes that human observers might miss.
With zero data privacy compromise, MedGemma 1.5 4B runs entirely on consumer-grade GPUs without any cloud connection, ensuring patient data never leaves your infrastructure - critical for HIPAA/GDPR compliance.
Latest Development
Released January 2026
Open source weights available on Hugging Face. Runs on consumer GPUs (RTX 4090 or similar).
Key Features
Advanced capabilities designed for 3D medical imaging analysis and privacy-first deployment
Core Capabilities
Native 3D CT/MRI Volume Analysis (No 2D Slice Limitations)
Longitudinal Disease Progression Tracking Across Multiple Scans
Electronic Health Record Question Answering (EHRQA)
Chest X-ray Anatomical Localization (38% IoU, up from 3%)
Consumer GPU Local Deployment (RTX 4090 or Similar)
HIPAA/GDPR Compliant - Data Never Leaves Your Infrastructure
Performance Benchmarks
MedGemma 1.5 4B achieves breakthrough results in medical imaging analysis
Chest X-ray Localization IoU
38%Massive improvement from 3% in previous versions
3D Volume Processing
NativeFirst open-source model with true 3D CT/MRI analysis
EHRQA Performance
SOTAState-of-the-art on electronic health record QA tasks
Local Inference
4BLightweight enough for consumer GPU deployment
Innovative Technologies
Native 3D Volume Analysis
True Volumetric Understanding
Unlike models that process 2D slices independently, MedGemma 1.5 understands the full 3D context of CT and MRI volumes, enabling deeper anatomical insights:
Cross-Slice Context
Understands relationships between adjacent slices for holistic interpretation
Volumetric Lesion Detection
Identifies lesions that span multiple slices with 3D awareness
Organ Segmentation
Precise 3D segmentation of organs and anatomical structures
Longitudinal Analysis
The medical time machine that tracks disease progression:
Multi-Scan Comparison
Automatically aligns and compares scans from different time points
Progression Tracking
Quantifies changes in lesion size, density, and characteristics over time
Early Detection
Identifies subtle changes that may indicate disease progression before visible to humans
Treatment Response
Evaluates how conditions respond to treatment across follow-up scans
Privacy-First Local Deployment
Complete data sovereignty with local inference:
Local Model Loading
Download weights once, run entirely offline
On-Device Inference
All processing happens on your hardware
Zero Data Transmission
Patient data never leaves your infrastructure
Use Cases
Clinical Decision Support
Assist radiologists with 3D imaging interpretation, lesion detection, and longitudinal tracking for more informed clinical decisions.
Primary Care Access
Bring advanced imaging analysis to underserved areas where specialist radiologists are unavailable, running locally on affordable hardware.
Medical Research Acceleration
Enable large-scale imaging studies with automated 3D analysis and longitudinal tracking across patient cohorts.
How to Use MedGemma 1.5 4B
Get started with breakthrough 3D medical imaging AI
Access MedGemma 1.5 4B
MedGemma 1.5 4B is available through Hugging Face (open weights), Dr7.ai API, or local deployment for enterprise healthcare.
Integration Options
Integrate MedGemma 1.5 4B into your imaging workflows, PACS systems, or research platforms.
- âĸ Dr7.ai Unified Medical API
- âĸ Hugging Face Transformers
- âĸ Local Docker Deployment
- âĸ PACS Integration via DICOM
Deployment Options
Flexible deployment from cloud API to consumer GPU.
- âĸ Local: RTX 4090 or similar (24GB VRAM)
- âĸ Edge: Medical workstation deployment
- âĸ Cloud: Dr7.ai managed API
Important Considerations
Clinical Validation Required
All MedGemma 1.5 outputs should be validated by qualified healthcare professionals before clinical use. The model is designed to assist, not replace, radiologist judgment.
Regulatory Compliance
Ensure compliance with local healthcare regulations (HIPAA, GDPR, etc.). Local deployment option enables full data sovereignty for sensitive patient data.
MedGemma 1.5 4B vs Other Medical AI Models
Understanding what makes MedGemma 1.5 unique for medical imaging
MedGemma 1.5 4B
3D Medical Imaging AI
- âNative 3D CT/MRI volume analysis (not limited to 2D slices)
- âLongitudinal disease tracking across multiple scans
- â38% IoU for chest X-ray localization (12x improvement)
- âConsumer GPU local deployment (RTX 4090)
- âComplete data privacy - runs fully offline
- âOpen source weights on Hugging Face
3D imaging analysis, longitudinal tracking, privacy-critical deployments
MedGemma 4B / 27B (Original)
Previous Generation Models
- ÃLimited to 2D slice-by-slice analysis
- ÃNo native 3D volume understanding
- ÃCannot track disease progression over time
- Ã3% IoU for chest X-ray localization
- Ã27B model too large for consumer hardware
- ÃNo longitudinal analysis capabilities
General medical Q&A, single-image analysis, cloud deployment
Frequently Asked Questions
Common questions about MedGemma 1.5 4B
What's new in MedGemma 1.5 compared to the original MedGemma?
MedGemma 1.5 introduces three major advances: (1) Native 3D volume analysis for CT and MRI scans, processing full volumes instead of individual 2D slices; (2) Longitudinal analysis that tracks disease progression across multiple scans over time; (3) Dramatically improved chest X-ray localization with 38% IoU, up from 3% in the original model.
How does 3D volume analysis work?
Unlike models that analyze each CT/MRI slice independently, MedGemma 1.5 processes the entire 3D volume as a unified input. This enables understanding of cross-slice relationships, 3D lesion detection, and volumetric organ segmentation - insights impossible with 2D-only analysis.
What hardware do I need to run MedGemma 1.5 4B locally?
MedGemma 1.5 4B is designed for consumer-grade hardware. A single RTX 4090 (24GB VRAM) or equivalent is sufficient for local inference. This makes privacy-preserving deployment accessible to clinics and research institutions without requiring expensive server infrastructure.
How does local deployment ensure data privacy?
With local deployment, you download the model weights once and run all inference entirely on your hardware. Patient data never leaves your infrastructure - no cloud connection required during inference. This enables HIPAA/GDPR compliance with complete data sovereignty.
What is longitudinal analysis and why does it matter?
Longitudinal analysis compares multiple scans of the same patient taken over time. MedGemma 1.5 automatically aligns images and quantifies changes in lesion size, density, and characteristics. This enables early detection of disease progression and treatment response evaluation - acting as a 'medical time machine' for patient monitoring.
How does MedGemma 1.5 4B compare to the 27B version?
The 4B version is specifically optimized for 3D imaging tasks and local deployment. While the 27B model offers broader capabilities, it requires significantly more hardware. The 4B model excels at imaging analysis tasks while remaining accessible for consumer GPU deployment.